EP0173931A3 - Method and circuit arrangement to display an erroneously functioning liquid crystal display - Google Patents

Method and circuit arrangement to display an erroneously functioning liquid crystal display Download PDF

Info

Publication number
EP0173931A3
EP0173931A3 EP85110639A EP85110639A EP0173931A3 EP 0173931 A3 EP0173931 A3 EP 0173931A3 EP 85110639 A EP85110639 A EP 85110639A EP 85110639 A EP85110639 A EP 85110639A EP 0173931 A3 EP0173931 A3 EP 0173931A3
Authority
EP
European Patent Office
Prior art keywords
signal
liquid crystal
display
operating
crystal display
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP85110639A
Other languages
German (de)
Other versions
EP0173931A2 (en
EP0173931B1 (en
Inventor
Jurgen Adams
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Digital Kienzle Computersysteme GmbH and Co KG
Original Assignee
Mannesmann Kienzle GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Mannesmann Kienzle GmbH filed Critical Mannesmann Kienzle GmbH
Priority to AT85110639T priority Critical patent/ATE89677T1/en
Publication of EP0173931A2 publication Critical patent/EP0173931A2/en
Publication of EP0173931A3 publication Critical patent/EP0173931A3/en
Application granted granted Critical
Publication of EP0173931B1 publication Critical patent/EP0173931B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/04—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of a single character by selection from a plurality of characters, or by composing the character by combination of individual elements, e.g. segments using a combination of such display devices for composing words, rows or the like, in a frame with fixed character positions
    • G09G3/16—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of a single character by selection from a plurality of characters, or by composing the character by combination of individual elements, e.g. segments using a combination of such display devices for composing words, rows or the like, in a frame with fixed character positions by control of light from an independent source
    • G09G3/18—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of a single character by selection from a plurality of characters, or by composing the character by combination of individual elements, e.g. segments using a combination of such display devices for composing words, rows or the like, in a frame with fixed character positions by control of light from an independent source using liquid crystals
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F11/00—Error detection; Error correction; Monitoring
    • G06F11/07—Responding to the occurrence of a fault, e.g. fault tolerance
    • G06F11/16—Error detection or correction of the data by redundancy in hardware
    • G06F11/1608—Error detection by comparing the output signals of redundant hardware
    • G06F11/1616—Error detection by comparing the output signals of redundant hardware where the redundant component is an I/O device or an adapter therefor
    • G06F11/162—Displays
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/006—Electronic inspection or testing of displays and display drivers, e.g. of LED or LCD displays
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S345/00—Computer graphics processing and selective visual display systems
    • Y10S345/904—Display with fail/safe testing feature

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Computer Hardware Design (AREA)
  • Chemical & Material Sciences (AREA)
  • Quality & Reliability (AREA)
  • General Engineering & Computer Science (AREA)
  • Liquid Crystal (AREA)
  • Liquid Crystal Display Device Control (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)
  • Design And Manufacture Of Integrated Circuits (AREA)

Abstract

A method and arrangement for providing a continuous visual check on the operation of a standard liquid crystal display by superimposing a checking signal upon the operating signals applied to the individual segment and back electrodes of the LCD through individual impedance paths substantially higher than the individual impedance paths carrying the operating signal to the segment and back electrodes so that the operating signal overrides the checking signal under normal circumstances but the checking signal overrides the operating signal when the latter is interrupted due to a fault. The checking signal causes the segment electrode or back electrode whose signal is impaired to blink at a visually perceptible rate. Preferably, the frequency of the checking signal is in the order of 0.5 Hz to 2.0 Hz.
EP85110639A 1984-09-01 1985-08-23 Method and circuit arrangement to display an erroneously functioning liquid crystal display Expired - Lifetime EP0173931B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT85110639T ATE89677T1 (en) 1984-09-01 1985-08-23 METHOD AND CIRCUIT ARRANGEMENT FOR INDICATION OF DEFECTIVE FUNCTIONING OF A LIQUID CRYSTAL DISPLAY.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3432247 1984-09-01
DE3432247A DE3432247C2 (en) 1984-09-01 1984-09-01 Arrangement for displaying a malfunction of a liquid crystal display

Publications (3)

Publication Number Publication Date
EP0173931A2 EP0173931A2 (en) 1986-03-12
EP0173931A3 true EP0173931A3 (en) 1989-01-18
EP0173931B1 EP0173931B1 (en) 1993-05-19

Family

ID=6244468

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85110639A Expired - Lifetime EP0173931B1 (en) 1984-09-01 1985-08-23 Method and circuit arrangement to display an erroneously functioning liquid crystal display

Country Status (5)

Country Link
US (1) US4734688A (en)
EP (1) EP0173931B1 (en)
AT (1) ATE89677T1 (en)
DE (2) DE3432247C2 (en)
ES (1) ES8700774A1 (en)

Families Citing this family (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0412326A (en) * 1990-05-01 1992-01-16 Canon Inc Liquid crystal element
DE4036521C2 (en) * 1990-11-16 1996-09-05 Vdo Schindling Device for the visual inspection of a liquid crystal display
US5160920A (en) * 1990-12-07 1992-11-03 International Business Machines Corporation Fail safe display for shelf labels
US5113134A (en) * 1991-02-28 1992-05-12 Thomson, S.A. Integrated test circuit for display devices such as LCD's
JPH055709A (en) * 1991-06-27 1993-01-14 Matsushita Electric Ind Co Ltd Screen inspection device
GB9308294D0 (en) * 1993-04-22 1993-06-09 Gilbarco Ltd Error detection apparatus for an electro-optic display
US6295042B1 (en) * 1996-06-05 2001-09-25 Canon Kabushiki Kaisha Display apparatus
US5812102A (en) * 1997-03-12 1998-09-22 Union Switch & Signal Inc. Vital monitoring system for seven-segment display used in railroad applications
DE19751675A1 (en) * 1997-11-21 1999-05-27 Aeg Ges Moderne Inf Sys Mbh Display arrangement
US6097302A (en) * 1999-06-23 2000-08-01 Union Switch & Signal, Inc. System and method for monitoring a plural segment light-emitting display
FR2901873B1 (en) * 2006-05-31 2008-07-11 Taema Sa DEVICE INDICATING A PHYSICAL SIZE
FR2915798B1 (en) * 2007-05-03 2010-04-30 Taema METHOD FOR CONTROLLING AN ELECTRONIC MANOMETER AND CORRESPONDING MANOMETER
FR2915799B1 (en) * 2007-05-03 2010-10-01 Taema ELECTRONIC PRESSURE MEASURING PRESSURE GAUGE IN A CONTAINER
FR2915801B1 (en) * 2007-05-03 2009-07-17 Taema Sa METHOD FOR CONTROLLING A HOMOGENEOUS BATCH OF FLUID BOTTLES UNDER PRESSURE
US20110109602A1 (en) * 2008-07-16 2011-05-12 Freescale Semiconductor, Inc. Fault detection apparatus for alphanumeric display system and method of detecting a fault
DE102011106251A1 (en) 2011-06-27 2012-09-13 Entertainment Distribution Company GmbH Circuit arrangement body, in particular component board
JP2020106632A (en) * 2018-12-27 2020-07-09 セイコーエプソン株式会社 Liquid crystal device, electronic apparatus, and movable body
JP7206953B2 (en) * 2019-01-28 2023-01-18 セイコーエプソン株式会社 Liquid crystal devices, liquid crystal drivers, electronic devices and moving bodies
JP7371455B2 (en) * 2019-11-21 2023-10-31 セイコーエプソン株式会社 Drive circuit, display module, and moving object
JP7319183B2 (en) * 2019-12-12 2023-08-01 スタンレー電気株式会社 Liquid crystal device and method for inspecting liquid crystal device
CN111667767B (en) * 2020-06-29 2022-04-08 武汉华星光电技术有限公司 Array substrate and display panel

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3585629A (en) * 1969-11-05 1971-06-15 Western Electric Co Display utilizing dimmed or flickering lamps to indicate different data sets
US4301450A (en) * 1980-02-04 1981-11-17 Burroughs Corporation Error detection for multi-segmented indicia display
EP0135331A2 (en) * 1983-08-19 1985-03-27 K-Tron International, Inc. Liquid crystal displays checking system and technique

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2229331A5 (en) * 1973-05-09 1974-12-06 Thomson Csf
US3866171A (en) * 1974-01-18 1975-02-11 Reliance Electric Co Display verifier
DE2402749C3 (en) * 1974-01-21 1979-05-10 Siemens Ag, 1000 Berlin Und 8000 Muenchen Multi-electrode array liquid crystal display screen
DE2459488A1 (en) * 1974-12-16 1976-06-24 Siemens Ag LIQUID CRYSTAL COMPOSITE DISPLAY SCREEN (CELL)
NL171845C (en) * 1977-02-18 1983-05-16 Philips Nv GAS DISCHARGE DISPLAY.
DE2743907A1 (en) * 1977-09-29 1979-04-12 Siemens Ag PASSIVE ELECTRO-OPTICAL DISPLAY
CH627575A5 (en) * 1978-06-09 1982-01-15 Mettler Instrumente Ag MULTISEGMENT LIQUID CRYSTAL DISPLAY WITH A FUNCTION MONITORING CIRCUIT.
CH627576A5 (en) * 1978-07-18 1982-01-15 Mettler Instrumente Ag LIQUID CRYSTAL SEGMENT DISPLAY WITH A MONITORING CIRCUIT.
FR2444956A1 (en) * 1978-12-23 1980-07-18 Tokyo Shibaura Electric Co LIQUID CRYSTAL DISPLAY DEVICE
US4297692A (en) * 1979-03-07 1981-10-27 Simmonds Precision Products, Inc. Segment failure detector for digital display
US4242677A (en) * 1979-05-24 1980-12-30 Mettler Instrumente Ag Monitoring device and method for a multiplexed segmental display
DE2951584A1 (en) * 1979-12-21 1981-07-16 Kienzle Apparate Gmbh, 7730 Villingen-Schwenningen METHOD AND ARRANGEMENT FOR CONTROLLING, MONITORING AND CONTROLLING THE OPERATION OF A MOST PASSIVE DATA DISPLAY, ESPECIALLY E.g. A LIQUID CRYSTAL DISPLAY (LCD DISPLAY)
DE3026848A1 (en) * 1980-07-16 1982-02-04 Kienzle Apparate Gmbh, 7730 Villingen-Schwenningen MONITORING CIRCUIT FOR CONTROLLING THE CONNECTIONS OF LCD DISPLAYS

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3585629A (en) * 1969-11-05 1971-06-15 Western Electric Co Display utilizing dimmed or flickering lamps to indicate different data sets
US4301450A (en) * 1980-02-04 1981-11-17 Burroughs Corporation Error detection for multi-segmented indicia display
EP0135331A2 (en) * 1983-08-19 1985-03-27 K-Tron International, Inc. Liquid crystal displays checking system and technique

Also Published As

Publication number Publication date
EP0173931A2 (en) 1986-03-12
ES546512A0 (en) 1986-11-16
DE3432247C2 (en) 1986-12-18
DE3432247A1 (en) 1986-03-13
ATE89677T1 (en) 1993-06-15
ES8700774A1 (en) 1986-11-16
DE3587348D1 (en) 1993-06-24
EP0173931B1 (en) 1993-05-19
US4734688A (en) 1988-03-29

Similar Documents

Publication Publication Date Title
EP0173931A3 (en) Method and circuit arrangement to display an erroneously functioning liquid crystal display
EP0399846A3 (en) An active-matrix display device and a method for the production of the same
WO1999057706A3 (en) Display device
EP0109160A3 (en) Electronic displays
ATE217423T1 (en) LIQUID CRYSTAL DISPLAY SYSTEM AND METHOD FOR OPERATING A LIQUID CRYSTAL DISPLAY WITH VISUAL FAILURE CONTROL
MX9602467A (en) Signal-receiving and signal-processing unit.
EP0486922B1 (en) Arrangement for checking a liquid crystal display
AU3507589A (en) Voltage controlling and indicating device
ATE173834T1 (en) MONITORING METHOD FOR A CAPACITOR FEEDTHROUGH AND A MONITORING ARRANGEMENT THEREFOR
FR2394911A1 (en) POWER SOURCE FOR A FUNCTIONAL DEVICE, FOR EXAMPLE OF EARTH LEAK DETECTION
ES8600821A1 (en) Method of and apparatus for monitoring the redox state of elements in glass
US20060125717A1 (en) Proximity detection-display device and method of using said device
SE8104364L (en) MONITORING CONNECTION FOR CHECKING THE CONNECTIONS OF LCD INDICATORS
JP3671235B2 (en) Inspection apparatus having an indicating element
JPS5797110A (en) Display device of sequence controller
JPS6431125A (en) Electrode pattern of liquid crystal display panel
JPS52100997A (en) Display control system
NO942034L (en) Test apparatus
EP0135331A3 (en) Liquid crystal displays checking system and technique
EP0376759A3 (en) Liquid crystal display apparatus
EP0063012A3 (en) Trip apparatus
JPS53107795A (en) Electrical discharge machining apparatus
JPH04132566A (en) Low frequency therapeutic apparatus
JPS6425694A (en) Ac contact defect preventing device
JPS6488496A (en) Driving of display device

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): AT DE FR GB IT SE

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): AT DE FR GB IT SE

17P Request for examination filed

Effective date: 19890615

17Q First examination report despatched

Effective date: 19910219

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: MANNESMANN KIENZLE GMBH

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT DE FR GB IT SE

REF Corresponds to:

Ref document number: 89677

Country of ref document: AT

Date of ref document: 19930615

Kind code of ref document: T

REF Corresponds to:

Ref document number: 3587348

Country of ref document: DE

Date of ref document: 19930624

ITF It: translation for a ep patent filed

Owner name: RESPINTO X FUORI TERMINE;SIAK -S.P.A.

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: SE

Payment date: 19930826

Year of fee payment: 9

ET Fr: translation filed
GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

Effective date: 19930817

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Effective date: 19940824

EAL Se: european patent in force in sweden

Ref document number: 85110639.3

EUG Se: european patent has lapsed

Ref document number: 85110639.3

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: AT

Payment date: 19950724

Year of fee payment: 11

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: AT

Effective date: 19960823

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 19970716

Year of fee payment: 13

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19980823

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 19980823

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 19990722

Year of fee payment: 15

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 19990915

Year of fee payment: 15

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20010430

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20010501

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST